Large scale moisture flux characteristics of the mediterranean basin and their relationships with drier and wetter climate conditions

Sinan Şahin, Murat Türkeş, Sheng Hung Wang, David Hannah, Warren Eastwood

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Large scale moisture flux analysis was carried out for the Mediterranean Basin in order to increase our understanding of the larger scale atmospheric controls on moisture flux convergence that are related to drier and wetter conditions. The seasonal moisture budget (precipitation minus evaporation) was calculated using the National Centers for Environmental Prediction—National Center for Atmospheric Research reanalysis data for the period 1949–2012. Results of the analysis show that the displacements of prevailing atmospheric action centres located over the subtropical mid-east Atlantic (i.e. Azores high) and the north-east Atlantic (i.e. sub-polar or Iceland low) to the north and to south, respectively, generally determine the wet or dry conditions over the Mediterranean Basin. In winter, the eddy fluxes originating from the mid-Atlantic propagate over Europe providing wet conditions in western and central Europe. The contribution of eddies to the moisture budget weaken in summer for the Mediterranean Basin, because of weaker and less frequent frontal activities in general.

Original languageEnglish
Pages (from-to)3381-3401
JournalClimate Dynamics
Volume45
Issue number11
Early online date4 Mar 2015
DOIs
Publication statusPublished - Dec 2015

Keywords

  • Atmospheric moisture budget
  • Convergence
  • Mediterranean basin
  • Teleconnections
  • Wet and dry, drought

ASJC Scopus subject areas

  • Atmospheric Science

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